Office



(No Model.) I 2 H. P. BROWN.

SYSTEM OF ARC AND INGANDESOBNT ELECTRIC LIGHTING.

Patented Marbll Invent 0!:

064 "Pam f UNITED STATES PATENT SYSTEM OF ARC AND INCAND sPEc'IrIcAnoN forming part sf Letters ESGENTELEGTRMZLE Patent No. aeaeio, aatetimzamn iii,

Application illed Novcmber'23i 1885, Serial No. 183,698; '(Noniodeli) To all whom it'mayconcerm v Be it known that I, HAROLD RBRowma? citizen of 'the United States, residing at Chiccag ninthe county of Cook and State of Illi 5 nois, have invented anew and'useful Improvement in Are and- Incandescent Electric- Lighting Systems, of; which the following is a specification.

. This {invention relates to means of operating on one and the same circuit arc and incandescent electric lights, the latter being an ranged in one. or more multiple-arc groups and the former being in series with each other and with the multiple-arc group or groups. The object of the invention is to provide a means of automaticallyshuntinga greater or less portion of the current around the group of incandescent lamps, according to the nun1- ber of lamps in use in the multiple-arc group '20 at any one time, so that whatever may be the 4 numbenin .nse'each i candescentlamp will always receive its normal amount of current; andto this end the invention consists, in connection with an arc-light or high-tension circuit having one or more are lights or other translating devices included therein in series, of a multiple-arc group of incandescent lamps or other like translating devices, a variableresistance shunt or derived circuit around said group through which more or less of the current may be shunted, and an electro-magnet'or solenoid the coil of which is included in, a shunt or derived circuit around said group for controlling and varying through 5 suitable devices the resistance of said shunt- The variable-resistance shunt around the multiple-arc group of incandescent lamps may conveniently consist of the adjustable carbons of an arc lamp, the resistance being Va-- 6 ried by varying the distance between the carbons, the opposite terminals of the group being connected to the carbons, 1 ni. th.is way when desired either-the arclight or in its stead the group of incandescent lamps may ,be used by simply connecting or disconnecting the terminals of the group with the carbons, and also the are light and one or more incandescent lamps of the: group may be burned simultaneously, as the amount of cur- 5o rent required for one or two incandescent lamps will not materially dim the are light. This is a matter of convenience in many locationsas, for example, in a drug-store, the

r whileth espace behind eser-iution-case is lighted by one oranorc inc.- iuescent ii In the accompany g d rawin s, r i ehim a part of this speciucatimi, and u w lar letters oi reference iru Figure l a diagram vi snowing A of circuits and devices embody tion; and Fig. 2 isa st anism for varying carbons, and thereby the resistance shunt.

In said drawings, A represents a dyna or other source of electric energy; E, a i an). working-circuit leading therefrmn, in is or may be included number of are 119 Z) in series.

CO- C are incr tdescent lamps or other trical devices arrangedi u re L on suitable branches 0. Th; s gioupcf 'ncan- 'descent lights takesthe place of one of-th" arc lights in the series, and other like grou may beused place ofother arc lights, desired; out as they connections are the same in each group only one is shown in the (it ings. V I

D is avariable-resistance shunt ortierived circuitaround the group of incaude lamps O C C, consisting, in the case she the drawings, of the carbons d and oi" the are d between them, the resistance l varied by varying the distance 0 carbons. The resistanoeshunt and t candescent-lamp-cireuit currents divide at and reunite at 1c.

Z is a shunt or t'let ix' ed tiaircuit about ti e group of lamps G. (l, he, dividin main circuit at tr and reuniting an electro-mag'net or helix of ance is included. The movable cote or armature II of the magnet or solenoid H o re a;- through a lever h and link 72/ to close'and r v I leasea clutch orring 7 2, aboutthemcvahie "carbon d or its holder, and thus to raise or lower the carbon d, and thereby automatically increase or decrease the resistance of the shunt D; A coarse-Wire or lows staircases helix N is also wrapped in the opposite ac tion around the spools of the magnetii, and operatesditfierentially, or so as to oppose the magnet H, and this coarse wlire coil included. in the main circuit B. A spring 72 and dash- :og pot h serve to regulate the motion of the core. This mechanism for moving or adjusting the front of which may be lighted byan are light,

, carbond is of a well-known construction commonly in use in are lamps, and does not, therefore, require a detailed description.

K represents the usual cut-out magnet by which the Whole apparatus may bc short-circuited. i

In operation, if, for example, one or more of the lamps C (1, the, in the multiple-arc group happens to break or is extinguished, the resistance through the remaining lamps and through the carbons (Z (1 will be thereby increased, and thus force more than the normal'amount of current through the shunt Z and its high-resistance helix 'H, and thereby permit the core H to descend and cause the clutch or ring 11 to release the carbon-rod d, when it will, by its own gravity,approach the carbon (1, and thus diminish the resistance through the shunt'l), until 'the remaining lamps in the group receive only their normal amount of current and the helix ll is again restored to its normal strength, when the clutch or ring h will-be again lifted or closed onthe carbon-rod and its further descent arrested. hen, on the other hand, an additional lamp or lamps is or are lighted in the group, theeiiect will be to diminish the total resistance through the lamps and the carbons or resistance-shunt D, thus causing less than the normal amount of currentto flow through the shunt Z and high-resistance helix H, so thatthe core 11 will belifted by, the force of the coarse-wire coil orhelixNin the main circuit, and thus separate the carbons (Z d and increase the resistance through them until the lamps in the group again receive the normal amount of current, when the normal current will also flow through the shunt or derived circuit Z and helix H, and thus arrest the further separation of the carbons.

While the carbons (Z (Z and are between them furnish a convenient variable resistance or rheostat for the shunt-circuit, and the clutch or ringthrough which the movable carbon-rod slides by its Weight whenthe clutch is 7 released bythe controlling-niagnet H a convenient means for varyingthe resistance,

the variable resistance may be formed in any well-known manner coin monly in use, and other mechanical means may be employed for varying the resistance through the action of the controlling-1nagnet.

I claim-- 1. "The combinatiom withan arc-light circuit having a number of arc lights mizluded therein in series, of a multiple-arc group of incandescent lamps, also included in series in said arc-light circuit, a shunt or derived circuit around said group, in which are included the carbons of an arc light,a shunt or derived circuit around said group having included therein a high-resistance electro-mag-- net or helix, its movable core or armature, a clutch or ring operated by said movable core or armature to grasp or release the movable carbon, anda coarserwire or low-resistance helix, also surrounding said core and included 'in the main circuit, whereby the resistance a shunt or derived circuit to the group of \vorkin g-circuits and arranged to vary or control. the resistance-circuits, substantially as luau electrical system'of distribution,

the combination, with a group of multiple Working-circuits in series with other and similar groups of electrical devices of the kind described, of a resistance-circuit around said group and an electro-magnet in a shunt or derived circuit to the group of working-cirwits and arranged to control or vary the resistance-circuit, substantially as specified.

4:. The combination, with a group of multiple working-circuits and devices-for utilizing the current flowing therein, of a normally-open shunt or'derived resistance-circuit and an electr'o-magnet included in a shunt or derived circuit to the group of working-circuits and arranged to control the resistance-circuit, substantially as specified.

5. Inan electrical system of distribution, the combination, with a group of multiple working-circuits in series with other and similar groups of electrical devices of the kind described, of a resistance-circuit around said group, an electro-magnet in the direct or main circuit, an opposing magnet in a shunt or derived circuit to the group of Working-circuits, and means for controlling the resistancecircuit, substantially as specitied.

6. The combination, with a series of multiple Working-circuits, of a shunt-circuit around said group,'avariable resistance or rheostat connected with said circuit, and means for operating said variable resistance or rheostat, whereby more or less of its resistance is brougl'it into the shunt-circuit, and an electro-magnetin a shunt to the group of working-circuits for controlling the action or operation of the rheostat mechanism, substantially as specified. 7 I

7. The combinatiomin anfeleetric-lighting system and connected with the same circuit, of an electric-arc lamp or lamps, a group of incandescent or similar lamps, the resistance of each of which remains normally constant and arranged in multiple are, an electromagnct in a derived circuit around said group of lamps, and a variable resistance in abranch around said group of lamps controlled by the electrounagnet, substantially as specified.

HAROLD P. BROWN. Witnesses:

II. M. MUNDAY, LEM. E. CURTIS. 

